The battery on my 1.4ACT DSG Leon FR ST 2016MY is a Banner (Made in Austria) EFB, 69Ah, 360A, DIN 680A EN/SAE/GS, part number 6R0 915 105B.
Yesterday on a 50 mile drive home the stop/start didn't start working until the last 5 miles or so (in ECO mode). Today I set it to Individual mode with all 'normal' settings except ECO for the Air Con and the start stop was working all the time.